Breit interaction in dielectronic recombination of H-like uranium

D Bernhardt; C Brandau; Z Harman; C Kozhuharov; A Müller; W Scheid; S Schippers; E W Schmidt; D Yu; A N Artemyev; I I Tupitsyn; S Böhm; F Bosch; F J Currell; B Franzke; A Gumberidze; J Jacobi; P H Mokler; F Nolden; U Spillmann; Z Stachura; M Steck; Th Stöhlker

doi:10.1088/1742-6596/388/6/062034

Journal of Physics: Conference Series

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Breit interaction in dielectronic recombination of H-like uranium

D Bernhardt¹, C Brandau^1,2, Z Harman^3,4, C Kozhuharov², A Müller¹, W Scheid⁵, S Schippers¹, E W Schmidt¹, D Yu¹, A N Artemyev^2,6, I I Tupitsyn⁷, S Böhm¹, F Bosch², F J Currell⁸, B Franzke², A Gumberidze^2,4, J Jacobi¹, P H Mokler^1,3, F Nolden², U Spillmann², Z Stachura⁹, M Steck^2,6 and Th Stöhlker^2,6

Published under licence by IOP Publishing Ltd
Journal of Physics: Conference Series, Volume 388, Electron-ion collisions [Abstracts] Citation D Bernhardt et al 2012 J. Phys.: Conf. Ser. 388 062034 DOI 10.1088/1742-6596/388/6/062034

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¹ Institut für Atom-und Molekülphysik, Justus-Liebig-Universität Giessen, 35392 Giessen, Germany

² GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany

³ Max-Planck-Institut für Kernphysik, 69117 Heidelberg, Germany

⁴ ExtreMe Matter Institut, GSI Helmholtzzentrum für Schwerionenforschung, 64291 Darmstadt, Germany

⁵ Institut für theoretische Physik, Justus-Liebig-Universität Giessen, 35392 Giessen, Germany

⁶ Physikalisches Institut, Universität Heidelberg, 69120 Heidelberg, Germany

⁷ Department of Physics, St. Petersburg State University, 198504 St. Petersburg, Russia

⁸ School of Mathematics and Physics, Queen's University, Belfast BT7 INN, UK

⁹ Instytut Fizyki Jadrowej, PL-31-342 Kraków, Poland

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Abstract

Absolute rate coefficients for dielectronic recombination (DR) of hydrogenlike U⁹¹⁺ have been measured at GSI's heavy-ion storage ring ESR in the center-of-mass energy range 63–90 keV. We find an excellent agreement between the measured DR rate coefficients and theoretical results from multi-configuration Dirac-Fock theory which includes the Breit interaction. The latter contributes nearly one half to the total resonance strengths of the KL_1/2L_1/2 and KL_1/2M_1/2 resonance groups.

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